Abstract: This invention relates to a method and a system to automatically generate mobile device software applications, where each one is differently personalized in terms of security parameters and/or obfuscation rules, by using a set of input registries from a first entity, each input registry containing at least a unique identifier and is used to generate an output personalization registry, that is different than another output registry. A second entity uses at least part of the data of the output registry, a generic replica of the mobile device software application and obfuscation software to generate a protected mobile software application that is associated to the output registry and to the at least one unique identifier. A user requests a replica of the mobile software application to the first entity and a protected mobile software application is downloaded to a user mobile device.